public class Mammal extends Animal {
	
	protected int env_size;
	
	public Mammal(String n,int a,int s){
		super(n,a);
		this.env_size = s;
	}
	
	public int getEnvSize(){
		return this.env_size;
	}
	
	public String toString(){
		String res = (super.toString() + ", env_size: " + this.env_size);
		return res;
	}
}
